SEWA - Seven Watt Amplifier

[lineup]

OK, fair enough. I also am only into music. My ultimate test is if it makes me cry!!

I have cried tears
when listening to my own circuit.
Not often happen
but I know what you mean, exactly!

 

[Tyimo]

Hi Mads!

Here is the Kaneda preamp.
I don't know why it is not working with my eagle....

Tyimo

 

[lineup]

Hi Mads!

Here is the Kaneda preamp.
I don't know why it is not working with my eagle....

Tyimo

unfortunately my freeware Eagle 4.16
cant open your files.

something about illegal copy

sorry, I wanted to see it

 

[Mad_K]

Hi Mads!

Here is the Kaneda preamp.
I don't know why it is not working with my eagle....

Tyimo

Sorry, looks like it's been created with a cracked version of eagle...

(I have 4.15 Pro)

 

[Tyimo]

O.K.

Here is the link:
http://belinfabien.free.fr/preampli/kaneda/kaneda.htm

Unfortunately it is in French.....


Tyimo

 

[Tyimo]

This preamp has a big "cult" in Farnce.
I read many good listening reports, you know: it is better than X or Y pream or even than BOZ and BOSOZ.....as always
Here are some specs:
Line stage
Gain 18 dB
Noise < -120 dB
Distortion < 0.003%
DC-500 kHz frequency response
+30 dBu output overhead
Can drive 600 ohms load (without the 390 ohm resistor in the output)

Would be good to listen.

Tyimo

 

[lineup]

Tyimo

Make a screenshot capture
when you have circuit ( .sch ) in your Eagle.

Then attachment this screenshot image for us.
I think this will work, any time!
I be most happy if you did ....

 

[Babowana]

This preamp has a big "cult" in Farnce.

Do you mean this?

http://www.bonavolta.ch/hobby/en/audio/kaneda_p.htm

 

[Tyimo]

Hi Lineup!

Make a screenshot capture

Yes, basicaly my problem was that I couldn't open the eagle file from that web page. There is already a screenshot image on the site, what I attached now.

Tyimo

 

[Tyimo]

Hi JH!

Do you mean this?

Yes, or that.



Tyimo

 

[Tyimo]

Kaneda preamps

Or I mean even this!

 

[Mad_K]

Looks nice, but I think it has about 5 times too many transistors in the signal path

 

[Tyimo]

Looks nice, but I think it has about 5 times too many transistors in the signal path

Yeeessss!

Tyimo

 

[tinitus]

Because of the low output of Sewa I guess it would be possible to make a simple "add on" predriver with an IC or a single Jfet ?

 

[bogdan_borko]

What is the difference between SEWA and POWER FOLLOWER by Andrea Ciuffoli ???

 

[Mad_K]

Not much, mainly the PSU and PSRR of circuit.

 

[Mad_K]

Because of the low output of Sewa I guess it would be possible to make a simple "add on" predriver with an IC or a single Jfet ?

IC would work, but demolish what we're trying to accomplish IMHO. Adding a voltage doubler and a JFET/MOSFET frontend could be done, but I feel it's better to have a separate preamp (more flexible). Maybe I'll make one to suit people with ordinary/passive preamps

 

[lineup]

Re: Kaneda preamps

Or I mean even this!

http://www.diyaudio.com/forums/showthread.php?postid=998730#post998730

Nice little pre amplifier.
Or maybe we can call it a ' Hifi Discrete OP-amp '
using only 5 T
but with higher voltage supply than most IC op-amps.
+35 -35 Volt

 

[Tyimo]

Hi Lineup!

Nice little pre amplifier. Or maybe we can call it a ' Hifi Discrete OP-amp

Yes! Earlyer I thougt on the one of the opamps design from Mr. Pass's DIY Op Amps article. I think those are much better for the SEWA, but not easy to find the Jfets for it. (ZVN3310A and ZVP3310A) My favorite are on fig 8 and 10. It use only 3 active device.

Tyimo

 

[Tyimo]

Hi Mads!

What is your oppinion about Pavel Macura's power follower?


Tyimo